PPG-safety valve; 420bar; As an alternative to Hofer safety valve. safety valve made of stainless steel; gastight version of spring bonnet for gaseous media without lifting device Valve size DN10 Admission: Male thread BSP-P Outlet: female thread BSP-P Inlet diameter: DN15 - 1/2 " Outlet nominal diameter: DN15 - 1/2 " Discharge capacity at 10% Pressure exceeded 6503 m³ / h [air] Seal: MD / PAI